JP2016049898A - Vehicle body structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle body structure that can achieve stable wiping operation of a wiper device by suppressing rotation moments in a vertical direction which occur in a wiper motor provided in a strut tower bar.SOLUTION: The vehicle body structure has a strut tower bar 40 that connects right and left strut towers 22R and 22L and is mounted with a wiper motor 30 with an output shaft 33 directed vertically. The strut tower bar 40 is formed in an approximately V-shape opened to a front side of the vehicle body in a planar view and has a V-shaped top 41 mounted on the vehicle body 11. The wiper motor 30 is mounted on three surfaces: a center mounting surface 52 which is placed in the V-shape of the strut tower bar 40, also positioned in the vicinity of the V-shape top inside the vehicle body 11 and directed in a longitudinal direction of the vehicle body, and a left mounting surface 44 and a right mounting surface 45 directed in a longitudinal direction of the vehicle body in the strut tower bar 40.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a vehicle body structure having a strut tower bar to which a wiper motor having an output shaft directed in the vertical direction is attached.

  The strut tower bar is a reinforcing member that connects the upper ends of the left and right strut towers provided on the vehicle body of the automobile and reinforces the left and right strut towers so that they do not fall down even when subjected to external force. The strut tower bar can increase the rigidity of the vehicle body and improve the running stability of the vehicle. Further, a structure is known in which a wiper device is provided at the front of the vehicle, and a wiper motor of the wiper device is attached to a strut tower bar (see, for example, Patent Document 1).

  In the vehicle body structure disclosed in Patent Document 1, both end portions of a substantially straight strut tower bar are respectively coupled to upper end portions of left and right strut towers at the front of the vehicle body. A wiper motor of an opposed wiper device is mounted on the side of the strut tower bar on the dashboard side (rear side of the vehicle body). A shaft (crankshaft) that supports a part of a link mechanism that transmits the power of the wiper motor to the wiper arm is fixed to the upper surface of the strut tower bar so as to extend upward.

  The position of the crankshaft is offset in the vertical direction with respect to the position of the wiper motor. Therefore, during operation of the wiper device, the force from the crankshaft acts on the wiper motor via the link mechanism. A rotational moment in the vertical direction is generated in the wiper motor. However, the wiper motor is disposed along the longitudinal direction of the strut tower bar. Moreover, the left and right attachment portions of the wiper motor are only fastened to the strut tower bar. For this reason, a rotational moment in the vertical direction acts on the attachment portion of the wiper motor. In order to increase the stability of the wiper operation of the wiper device, it is preferable to suppress such a rotational moment.

JP 2006-123752 A

  It is an object of the present invention to provide a vehicle body structure capable of suppressing a vertical rotational moment acting on a wiper motor mounting portion provided on a strut tower bar and obtaining a stable wiper operation of the wiper device.

  According to the invention according to claim 1, in the vehicle body structure having a strut tower bar that connects the left and right strut towers and to which a wiper motor having an output shaft directed in the vertical direction is attached, the strut tower bar includes: It is formed in a substantially V shape that opens in front of the vehicle body in a plan view, and the top of the V character is attached to the vehicle body, and the wiper motor is disposed inside the V shape of the strut tower bar, A central mounting surface located near the top of the V-shape in the vehicle body and facing the vehicle body longitudinal direction, a left mounting surface and a right mounting surface facing the vehicle body longitudinal direction in the strut tower bar And is attached to three points.

  As described in claim 2, preferably, the center mounting surface is vertically offset with respect to the left mounting surface and the right mounting surface.

  More preferably, the vehicle body has a strut tower bar mounting box portion for fixing the vertex of the V-shape of the strut tower bar on the front surface of the upper portion of the dashboard lower panel, The surface is provided on the front surface of the strut tower bar mounting box portion.

  More preferably, the strut tower bar is constituted by left and right pipes, and one end portions of the left and right pipes are crushed and formed in a flat shape so that they are overlapped with each other. The left and right brackets for attachment to the left and right strut towers are coupled to the other end portions of the left and right pipes, and the left and right brackets are formed of horizontal plates extending in the vehicle width direction. It is comprised by the combination with a vertical board, and the ridgeline of the corner of a horizontal board and a vertical board is respectively continuous over the whole vehicle width direction of a left-right bracket, It is characterized by the above-mentioned.

  More preferably, the vehicle body is provided with a cowl top positioned above the strut tower bar, and the cowl top is a central portion extending from the middle of the strut tower bar toward the cowl top. It is attached to the bracket and is directly attached to the upper surface in the vicinity of both ends in the longitudinal direction of the strut tower bar.

  More preferably, the dashboard lower panel is provided with a support bracket for supporting the wiper rotating shaft to which the driving force of the wiper motor is transmitted from the wiper link mechanism, and is substantially V-shaped. The strut tower bar is characterized in that, in addition to the V-shaped apex being attached to the vehicle body, it is attached to the dashboard lower panel via a support bracket.

  As described in claim 7, more preferably, the left and right sides of the strut tower bar each have a triangular cross section having a triangular cross section when viewed from the longitudinal direction, and the left mounting surface and the right mounting surface are disposed on the front surface of the triangular cross section. Is formed.

  In the invention according to claim 1, the strut tower bar is formed in a substantially V-shape that opens forward of the vehicle body in plan view, and the apex of the V-shape is attached to the vehicle body. The wiper motor whose output shaft is directed in the vertical direction is arranged inside the V-shape of the strut tower bar. The wiper motor has a central mounting surface that is positioned near the top of the V-shape in the vehicle body and faces the vehicle body longitudinal direction, a left mounting surface that faces the vehicle body longitudinal direction in the strut tower bar, and a right mounting surface. Since it is attached to three points, the support rigidity of the wiper motor is improved. For this reason, the rotational moment of the up-down direction which acts on the attachment part of a wiper motor can be suppressed, and the stable wiper operation | movement of a wiper apparatus can be obtained.

  In the invention according to claim 2, since the center mounting surface is offset vertically with respect to the left mounting surface and the right mounting surface, the vertical support rigidity of the wiper motor is improved, and the upper and lower surfaces acting on the wiper motor mounting portion are improved. The rotational moment in the direction can be further suppressed.

  In the invention according to claim 3, the vehicle body has a strut tower bar mounting box portion for fixing the V-shaped apex of the strut tower bar on the front surface of the upper portion of the dashboard lower panel. Since the strut tower bar is fixed not only to the left and right strut towers but also to the strut tower bar mounting box portion, the support rigidity of the strut tower bar is improved. Since the wiper motor is attached to the strut tower bar having improved support rigidity and is also attached to the central attachment surface of the strut tower bar attachment box portion, the support rigidity of the wiper motor can be further improved.

  In the invention which concerns on Claim 4, a strut tower bar is comprised by the pipe on either side. One end of each of the left and right pipes is crushed and formed into a flat shape, thereby constituting a vehicle body mounting portion that is overlapped with each other and attached to the vehicle body. Since the left and right brackets for mounting on the tower are coupled, one pipe can be shared between the left and the right, and the manufacturing cost of parts can be reduced. The left and right brackets are composed of a combination of a horizontal plate and a vertical plate extending in the vehicle width direction, and the corner ridge lines of the horizontal plate and the vertical plate are respectively continuous over the entire vehicle width direction of the left and right brackets. In addition, since the periphery of the ridge portion also serves as a rib, the support rigidity to the left and right strut towers can be improved.

  In the invention according to claim 5, the vehicle body is provided with a cowl top positioned above the strut tower bar. Generally, a dashboard upper panel is provided on the vehicle body, and the cowl top is supported by the dashboard upper panel. In this regard, in the present invention, the cowl top is attached to the central bracket extending from the middle of the strut tower bar toward the cowl top, and is directly attached to the upper surface in the vicinity of both ends in the longitudinal direction of the strut tower bar. ing. Therefore, the cowl top can be supported without a dashboard upper panel, and the dashboard upper panel can be eliminated to reduce the weight of the vehicle body.

  In the invention which concerns on Claim 6, the driving force of a wiper motor is transmitted to a wiper rotating shaft via a wiper link mechanism. A support bracket for supporting the wiper rotating shaft is provided on the dashboard lower panel. The V-shaped strut tower bar is attached to the dashboard lower panel via a support bracket in addition to the V-shaped apex being attached to the vehicle body, improving the support rigidity of the wiper device and improving the vehicle body rigidity. Can be improved.

  In the invention which concerns on Claim 7, it has a triangular cross-section part of a triangular cross section, respectively, seeing from a longitudinal direction at the right and left of a strut tower bar. If it is a triangular cross section, the rigidity is higher than that of a single flat plate-like support part, and the left mounting surface and the right mounting surface are formed on the front surface of such a triangular cross section. The rigidity can be further improved.

1 is a perspective view of a vehicle body structure according to the present invention. It is a principal part enlarged view of FIG. It is a principal part perspective view of the state where the wiper motor concerning the present invention was attached. FIG. 4 is a view taken along arrow 4 in FIG. 3. FIG. 5 is a view taken in the direction of arrow 5 in FIG. 2. FIG. 6 is a sectional view taken along line 6-6 of FIG. FIG. 7 is a sectional view taken along line 7-7 in FIG. 3. 1 is a perspective view of a vehicle body structure in a state where a cowl top according to the present invention is provided. FIG. 9 is a cross-sectional view taken along line 9-9 in FIG. 3.

  The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. Note that “front (Fr)”, “rear (Rr)”, “left (L)”, and “right (R)” follow the direction seen from the driver.

First, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the vehicle 10 is an automobile, and an engine room 13 is formed in the left and right front fenders 12 </ b> L and 12 </ b> R at the front of the vehicle body 11, and a vehicle compartment 14 is formed behind the engine room 13. Has been. The engine room 13 and the vehicle compartment 14 are partitioned by a dashboard lower panel 15. The dashboard lower panel 15 is formed like a standing wall, and a cowl top 16 (see FIG. 8) is formed at the upper end of the dashboard lower panel 15 throughout the vehicle width direction.

  The front portion of the vehicle body 11 includes left and right upper frames 21L and 21R, left and right strut towers 22L and 22R, horizontal plate-shaped damper bases 23L and 23R formed at upper ends of the left and right strut towers 22L and 22R, and left and right Wheel house 24R (only the right side is shown) and a front bulkhead 25. The front of the front bulkhead 25 is covered with a bumper face 26.

  The left and right upper frames 21L and 21R extend forward from the vehicle compartment 14 side and extend to the front of the left and right wheel houses 24R. The left and right strut towers 22L, 22R are provided inside the left and right upper frames 21L, 21R, and the left and right wheel houses 24R are connected to the lower portions of the left and right strut towers 22L, 22R.

  As shown in FIGS. 1 to 3, the vehicle body structure includes a strut tower bar 40 that connects the left and right strut towers 22 </ b> L and 22 </ b> R and to which the wiper motor 30 is attached. The strut tower bar 40 is formed in a substantially V shape that opens forward in the vehicle body in plan view, and has a V-shaped apex 41 attached to the vehicle body 11 and left and right end portions 42L, 42R at the left and right damper bases 23L, 23R. Are fastened by fastening members 43.

  As shown in FIGS. 2 to 5, the vehicle body 11 is provided with a strut tower bar mounting for fixing the V-shaped apex 41 of the strut tower bar 40 to the front of the center and upper portion of the dashboard lower panel 15 in the vehicle width direction. A box portion 51 is provided. The strut tower bar mounting box portion 51 has a substantially dome shape obtained by bending a plate-like member, and is provided so as to bulge forward from the dashboard lower panel 15 to the vehicle.

  The strut tower bar mounting box portion 51 has a substantially cup-shaped opening facing the dashboard lower panel 15 side, and an upper portion 51a, a lower portion 51b, a left portion 51c, and a right portion 51d are welded to the dashboard lower panel 15. That is, since the entire peripheral edge portion of the strut tower bar mounting box portion 51 is welded to the dashboard lower panel 15, the support rigidity is high.

  The wiper motor 30 includes a motor main body 31 that generates a driving force, a speed reducer 32 connected to the motor main body 31, and an output shaft 33 extending vertically from the speed reducer 32, and via a motor bracket 34. The vehicle body 11 and the strut tower bar 40 are attached.

  The motor bracket 34 includes a bottom plate portion 35 that supports the lower portion of the wiper motor 30 and a back plate portion 36 that rises from the rear portion of the bottom plate portion 35 and is positioned behind the vehicle body of the wiper motor 30, and the back plate portion 36 has a substantially triangular shape. . The wiper motor 30 is fastened to the bottom plate part 35 by a fastening member 37.

  The wiper motor 30 is disposed inside the V-shape of the strut tower bar 40 and is positioned near the V-shaped apex 41 in the vehicle body 11 via the motor bracket 34 and faces the vehicle body longitudinal direction. The central attachment surface 52 and the left attachment surface 44 and the right attachment surface 45 facing the vehicle body front-rear direction in the strut tower bar 40 are attached by fastening members 38 at three points.

  Since the center mounting surface 52, the left mounting surface 44, and the right mounting surface 45 are surfaces facing the front of the vehicle body, the wiper motor 30 can be mounted from the front, and the assemblability can be improved. In the embodiment, the motor bracket 34 is fastened to the central mounting surface 52, the left mounting surface 44, and the right mounting surface 45 by the fastening member 38. However, as long as the motor bracket 34 can be fastened, a bush may be used.

  The central mounting surface 52 is provided on the front surface of the strut tower bar mounting box portion 51 and is offset from the left mounting surface 44 and the right mounting surface 45 by a distance L1 in the vertical direction. That is, the wiper motor 30 is supported at three points that are offset in the vehicle width direction and the vertical direction via the motor bracket 34.

  One end of a wiper link mechanism 61 is connected to the output shaft 33 of the wiper motor 30, and the other end of the wiper link mechanism 61 is connected to a wiper rotation shaft 62. Since the output shaft 33 of the wiper motor 30 is directed in the vertical direction, when the wiper is operated, the distal end portion of the output shaft 33 receives a force from the wiper link mechanism 61, thereby generating a vertical rotational moment in the wiper motor 30. Here, the wiper motor 30 is supported at three points that are offset in the vehicle width direction and the vertical direction via the motor bracket 34, and has high support rigidity, so that the rotational moment in the vertical direction generated in the wiper motor 30 is suppressed, Stable wiper operation can be obtained. That is, the rotational moment in the vertical direction acting on the mounting portion of the motor bracket 34 that supports the wiper motor 30 can be suppressed, and a stable wiper operation of the wiper device can be obtained.

  The wiper link mechanism 61 is not limited to the configuration shown in FIG. 4 and may be connected not only to the wiper rotation shaft 62 (see FIG. 1) on the vehicle body center side but also to the wiper rotation shaft 63 on the right side of the vehicle body. There is no problem.

  As shown in FIGS. 3 to 7, the strut tower bar 40 includes left and right pipes 40 </ b> L and 40 </ b> R. The one end portions of the left and right pipes 40L, 40R are crushed and formed into a flat shape so that they are overlapped with each other to form a vehicle body mounting portion 46. For this reason, the shape of the left and right pipes 40L and 40R can be made the same, so that one pipe can be shared between the left and right, and the manufacturing cost of the parts can be reduced.

  The vehicle body attachment portion 46 is fastened to the lower portion of the strut tower bar attachment box portion 51 by a fastening member 47. Since the left and right pipes 40L, 40R are fastened together by the fastening member 47, the number of parts can be reduced. In the embodiment, a stud bolt is provided at the lower portion of the strut tower bar mounting box portion 51, and the stud bolt is passed through a through hole formed in the vehicle body mounting portion 46 and fastened with a nut. A weld nut may be provided in the strut tower bar mounting box portion 51, and the bolt may be passed through a through hole formed in the vehicle body mounting portion 46 and fastened to the weld nut. Furthermore, the fastening member 47 may be another member as long as it can fasten the vehicle body attachment portion 46 to the strut tower bar attachment box portion 51, such as a pin, instead of a bolt or a nut.

  In addition, a load is applied to the strut tower bar mounting box 51 from the left and right pipes 40L and 40R and the motor bracket 34, but the entire periphery of the strut tower bar mounting box 51 is welded to the dashboard lower panel 15. Since the load is received not on one point but on the entire peripheral portion, the support rigidity is high and can be favorably supported.

  Since the strut tower bar 40 is fixed not only to the left and right strut towers 22L and 22R but also to the strut tower bar mounting box 51, the support rigidity of the strut tower bar 40 is improved. Furthermore, since the wiper motor 30 is attached to the strut tower bar 40 with improved support rigidity and is also attached to the central attachment surface 52 of the strut tower bar attachment box portion 51, the support rigidity of the wiper motor 30 can be further improved. it can.

  In addition, since the left and right pipes 40L, 40R have a constant cross section at the middle and are simple in shape, the manufacturing cost of the parts can be reduced. Left and right brackets 48L and 48R for attachment to the left and right strut towers 22L and 22R are coupled to the other end portions of the left and right pipes 40L and 40R, respectively.

  The left and right brackets 48L and 48R are configured by a combination of a horizontal plate 48a and a vertical plate 48b extending in the vehicle width direction, and a corner ridge line 49 between the horizontal plate 48a and the vertical plate 48b is formed between the left and right brackets 48L and 48R. Each is continuous throughout the vehicle width direction. Since the periphery of the ridge line 49 also serves as a rib, the support rigidity to the left and right strut towers 22L and 22R can be improved. Furthermore, since the horizontal plate 48a is formed in a closed cross section in which the upper and lower plates are combined, the support rigidity can be further improved.

  The dashboard lower panel 15 is provided with a support bracket 64 for supporting the wiper rotating shaft 62. The wiper rotating shaft 62 is a shaft to which the driving force of the wiper motor 30 is transmitted from the wiper link mechanism 61 and a wiper (not shown) is attached. The substantially V-shaped strut tower bar 40 is attached to the dashboard lower panel 15 via a support bracket 64 in addition to the V-shaped apex 41 being attached to the vehicle body 11.

  Specifically, the right pipe 40 </ b> R of the strut tower bar 40 is fastened to the support bracket 64 by a fastening member 65. Since the support bracket 64 has ribs 64a extending in the longitudinal direction of the vehicle body along both ends, the rigidity of the support bracket 64 itself is high. For this reason, while improving the support rigidity of a wiper apparatus, a vehicle body rigidity can also be improved.

  As shown in FIGS. 3 and 8, the vehicle body 11 is provided with a cowl top 16 positioned above the strut tower bar 40. The strut tower bar 40 has a central bracket 71 extending from the middle of the left pipe 40L in the vehicle width direction toward the front in the vehicle width direction. The central bracket 71 extends from the middle of the strut tower bar 40 toward the cowl top 16 and supports the front center portion of the cowl top 16. The front center portion of the cowl top 16 is attached to the central bracket 71 by a fastening member 72.

  Further, left and right fixing portions 16 </ b> L and 16 </ b> R for fixing the cowl top 16 to the strut tower bar 40 are provided on the front left and right portions of the cowl top 16. The left and right fixing portions 16L, 16R are directly attached to the upper surfaces of the left and right pipes 40L, 40R in the vicinity of both ends in the longitudinal direction by fastening members 73. Therefore, the cowl top 16 can be supported without a dashboard upper panel, and the weight of the vehicle body can be reduced by eliminating the dashboard upper panel. Furthermore, the cowl top 16 may be simply mounted on the strut tower bar 40 from above and fastened, and the assemblability can be improved.

  As shown in FIGS. 3 and 9, the right pipe 40R of the strut tower bar 40 has a triangular cross section 74 having a triangular cross section when viewed from the longitudinal direction, and a right mounting surface on the front surface of the triangular cross section 74. 45 is formed. If the triangular cross section 74 is used, the rigidity is higher than that of a single flat plate-like support portion, and the right mounting surface 45 is formed on the front surface of the triangular cross section 74, so that the wiper motor 30 is supported. The rigidity can be further improved.

  For convenience, the triangular cross section 74 of the right pipe 40R has been described, but the triangular cross section of the left pipe 40R has the same configuration.

  The vehicle body structure according to the present invention is not limited to the above-described embodiments, and can be changed or improved as appropriate. For example, in the embodiment, the vehicle body structure is provided with a follow-up wiper device, but an opposing wiper device may be used. In the embodiment, the output shaft 33 extends below the wiper motor 30. However, the output shaft 33 may extend above the wiper motor 30.

  In the embodiment, the central mounting surface 52, the left mounting surface 44, and the right mounting surface 45 for mounting the motor bracket 34 are surfaces facing the front of the vehicle body. However, the present invention is not limited to this. The surface 44 and the right mounting surface 45 may be surfaces facing the rear of the vehicle body. In this case, the strut tower bar mounting box portion 51 provided with the central mounting surface 52 is not shaped like a dome, but may be L-shaped when viewed from the side of the vehicle body, and the back side of L may be a surface facing the rear of the vehicle body.

  The present invention is suitable for application to a vehicle wiper device having a shank attached to an arm head and capable of swinging in a direction away from the glass surface.

10 Vehicle (Automobile)
11 Car body 15 Dashboard lower panel 16 Cowl top 22L, 22R Left and right strut tower 30 Wiper motor 33 Output shaft 40 Strut tower bar 40L, 40R Left and right pipe 41 V-shaped apex 44 Left mounting surface 45 Right mounting surface 48a Horizontal plate 48b Vertical plate 48L, 48R Left and right brackets 49 Edge line 51 Strut tower bar mounting box 52 Central mounting surface 61 Wiper link mechanism 62 Central wiper rotating shaft 64 Support bracket 71 Central bracket 74 Triangle section

Claims (7)

In the vehicle body structure having a strut tower bar, which connects the left and right strut towers and is attached with a wiper motor whose output shaft is directed in the vertical direction.
The strut tower bar is formed in a substantially V-shape opened in front of the vehicle body in a plan view, and has a V-shaped apex attached to the vehicle body.
The wiper motor is disposed inside the V-shape of the strut tower bar, and is located near the top of the V-shape in the vehicle body and faces the vehicle body in the longitudinal direction, the strut A vehicle body structure characterized by being attached to three points of a left mounting surface and a right mounting surface facing the vehicle body longitudinal direction in a tower bar.   The vehicle body structure according to claim 1, wherein the central mounting surface is offset vertically with respect to the left mounting surface and the right mounting surface. The vehicle body has a strut tower bar mounting box portion for fixing the top of the V-shape of the strut tower bar on the front surface of the upper part of the dashboard lower panel,
The vehicle body structure according to claim 1 or 2, wherein the central mounting surface is provided on a front surface of the strut tower bar mounting box portion. The strut tower bar is composed of left and right pipes,
Each one end of the left and right pipes is crushed and formed into a flat shape, thereby constituting a vehicle body attachment portion that is overlapped with each other and attached to the vehicle body,
Left and right brackets for attaching to the left and right strut towers are coupled to the other ends of the left and right pipes,
The left and right brackets are configured by a combination of a horizontal plate and a vertical plate extending in the vehicle width direction,
The vehicle body structure according to any one of claims 1 to 3, wherein a corner ridge line between the horizontal plate and the vertical plate is continuous over the entire vehicle width direction of the left and right brackets. The vehicle body is provided with a cowl top located above the strut tower bar,
The cowl top is attached to a central bracket extending from the middle of the strut tower bar toward the cowl top, and is directly attached to the upper surface in the vicinity of both longitudinal ends of the strut tower bar. The vehicle body structure according to any one of claims 1 to 4, wherein: A support bracket for supporting the wiper rotating shaft to which the driving force of the wiper motor is transmitted from the wiper link mechanism is provided on the dashboard lower panel,
The substantially V-shaped strut tower bar is attached to the dashboard lower panel via the support bracket in addition to the V-shaped apex being attached to the vehicle body. Body structure. The left and right sides of the strut tower bar each have a triangular cross section of a triangular cross section when viewed from the longitudinal direction,
The vehicle body structure according to any one of claims 1 to 6, wherein the left mounting surface and the right mounting surface are formed on a front surface of the triangular cross section.

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